Actually I am trying to sign in through Facebook and google plus from a fragment(LoginFragment) attached to an activity(LoginActivity) and after clicking sign in i will move to another activity(HomeActivity).Thing is facebook sign in is working just fine but in google plus sign in I am getting some exception like:-
Caused by: java.lang.NullPointerException
at archerpenny.valmoref.LoginFragment.onActivityResult(LoginFragment.java:264)
at archerpenny.valmoref.LogInActivity.onActivityResult(LogInActivity.java:32)
at android.app.Activity.dispatchActivityResult(Activity.java:5372)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3215)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3262)
at android.app.ActivityThread.access$1200(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1286)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:177)
at android.app.ActivityThread.main(ActivityThread.java:4944)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
I think there is some problem with my OnActivityResult(),but I dont know how to solve it.
Here is my LoginFragment.java--
public class LoginFragment extends Fragment implements View.OnClickListener,GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
TextView Fpassword, Signup;
EditText email, password;
ImageView Signin, fb_button, gplus_button;
LogInActivity myContext;
static String personName;
private boolean mIntentInProgress;
FragmentManager fragmentManager;
private CallbackManager callbackmanager;
//for G+
private static final int PROFILE_PIC_SIZE = 30;
private GoogleApiClient mGoogleApiClient;
private ConnectionResult mConnectionResult;
private boolean mSignInClicked;
static final int RC_SIGN_IN = 0;
/* Is there a ConnectionResult resolution in progress? */
private boolean mIsResolving = false;
/* Should we automatically resolve ConnectionResults when possible? */
private boolean mShouldResolve = false;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
myContext = (LogInActivity) activity;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_login, container, false);
Fpassword = (TextView) view.findViewById(R.id.ForgotPassword);
Signup = (TextView) view.findViewById(R.id.SignUp);
email = (EditText) view.findViewById(R.id.Email_Val);
password = (EditText) view.findViewById(R.id.PasswordVal);
Signin = (ImageView) view.findViewById(R.id.signin);
fb_button = (ImageView) view.findViewById(R.id.FB_btn);
gplus_button = (ImageView) view.findViewById(R.id.Gplus_btn);
FacebookSdk.sdkInitialize(getActivity().getApplicationContext());
Fpassword.setPaintFlags(Fpassword.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
Signup.setPaintFlags(Signup.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
email.setHintTextColor(Color.parseColor("#727272"));
password.setHintTextColor(Color.parseColor("#727272"));
Fpassword.setOnClickListener(this);
Signup.setOnClickListener(this);
Signin.setOnClickListener(this);
fb_button.setOnClickListener(this);
gplus_button.setOnClickListener(this);
return view;
}
@Override
public void onClick(View v) {
if (v.getId() == R.id.ForgotPassword) {
Fragment forgotpassword = new ForgotPasswordFragment();
myContext.getSupportFragmentManager().beginTransaction().add(R.id.container_login, forgotpassword).addToBackStack("fragBack1").commit();
} else if (v.getId() == R.id.SignUp) {
Fragment signup = new SignUpFragment();
myContext.getSupportFragmentManager().beginTransaction().add(R.id.container_login, signup).addToBackStack("fragBack1").commit();
} else if (v.getId() == R.id.signin) {
Intent intent_signin = new Intent(myContext, HomeActivity.class);
startActivity(intent_signin);
} else if (v.getId() == R.id.FB_btn) {
//Intent intent_signin = new Intent(myContext, HomeActivity.class);
// startActivity(intent_signin);
Fblogin();
} else if (v.getId() == R.id.Gplus_btn)
{
mGoogleApiClient = new GoogleApiClient.Builder(getActivity()).addConnectionCallbacks(this).addOnConnectionFailedListener(this).addApi(Plus.API).addScope(new Scope(Scopes.PROFILE)).build();
//Intent intent_signin = new Intent(myContext, HomeActivity.class);
// startActivity(intent_signin);
onSignInClicked();
}
}
private void onSignInClicked() {
// User clicked the sign-in button, so begin the sign-in process and automatically
// attempt to resolve any errors that occur.
mShouldResolve = true;
mGoogleApiClient.connect();
}
@Override
public void onStart() {
super.onStart();
}
@Override
public void onStop() {
super.onStop();
}
private void Fblogin()
{
callbackmanager = CallbackManager.Factory.create();
// Set permissions
LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile, email, user_birthday,user_friends"));
LoginManager.getInstance().registerCallback(callbackmanager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
// App code
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
// Application code
Log.d("LoginActivity", response.toString());
Log.d("LoginActivity", object.toString());
String jsonresult = String.valueOf(object);
System.out.println("JSON Result" + jsonresult);
String str_firstname=null,str_id=null;
try {
str_firstname=object.getString("name");
str_id = object.getString("id");
String str_email = object.getString("email");
Intent login = new Intent(myContext, HomeActivity.class);
login.putExtra("name", str_firstname);
login.putExtra("URL", "https://graph.facebook.com/" + str_id + "/picture?width="+PROFILE_PIC_SIZE+"&height="+PROFILE_PIC_SIZE);
startActivity(login);
} catch (JSONException e) {
e.printStackTrace();
Log.d("animesh123","aa");
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,gender, birthday");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
// App code
Log.v("LoginActivity", "cancel");
}
@Override
public void onError(FacebookException exception) {
// App code
Log.v("LoginActivity", exception.getCause().toString());
}
});
}
@Override
public void onConnected(Bundle bundle) {
mSignInClicked = false;
Toast.makeText(myContext, "User is connected!", Toast.LENGTH_LONG).show();
if (Plus.PeopleApi.getCurrentPerson(mGoogleApiClient) != null) {
Person currentPerson = Plus.PeopleApi
.getCurrentPerson(mGoogleApiClient);
personName = currentPerson.getDisplayName();
String birthDate=currentPerson.getAboutMe();
String personPhotoUrl = currentPerson.getImage().getUrl();
String personGooglePlusProfile = currentPerson.getUrl();
String email = Plus.AccountApi.getAccountName(mGoogleApiClient);
Log.d("sachin", "Name: " + personName + " " + currentPerson.getName() + ", plusProfile: "
+ personGooglePlusProfile + ", email: " + email
+ ",BirthDay:" + birthDate + ", Image: " + personPhotoUrl);
personPhotoUrl = personPhotoUrl.substring(0,
personPhotoUrl.length() - 2)
+ PROFILE_PIC_SIZE;
Intent login=new Intent(myContext,HomeActivity.class);
login.putExtra("name",personName);
login.putExtra("URL", personPhotoUrl);
startActivity(login);
}
}
@Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackmanager.onActivityResult(requestCode,resultCode,data);
Log.d("ani", "onActivityResult:" + requestCode + ":" + resultCode + ":" + data);
if (requestCode == RC_SIGN_IN) {
// If the error resolution was not successful we should not resolve further.
if (resultCode != getActivity().RESULT_OK) {
mShouldResolve = false;
}
mIsResolving = false;
mGoogleApiClient.connect();
}
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult)
{
// Could not connect to Google Play Services. The user needs to select an account,
// grant permissions or resolve an error in order to sign in. Refer to the javadoc for
// ConnectionResult to see possible error codes.
Log.d("ani", "onConnectionFailed:" + connectionResult);
if (!mIsResolving && mShouldResolve) {
if (connectionResult.hasResolution()) {
try {
connectionResult.startResolutionForResult(getActivity(), RC_SIGN_IN);
mIsResolving = true;
} catch (IntentSender.SendIntentException e) {
Log.e("ani", "Could not resolve ConnectionResult.", e);
mIsResolving = false;
mGoogleApiClient.connect();
}
}
}
}
}
Here is My LoginActivity:--
public class LogInActivity extends AppCompatActivity
{
FragmentManager fragmentManager;
Fragment blankFragment=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_log_in);
blankFragment=new LoginFragment();
fragmentManager=getSupportFragmentManager();
fragmentManager.beginTransaction().add(R.id.container_login, blankFragment).addToBackStack("fragBack1").commit();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == LoginFragment.RC_SIGN_IN) {
LoginFragment fragment = (LoginFragment) getSupportFragmentManager()
.findFragmentById(R.id.container_login);
fragment.onActivityResult(requestCode, resultCode, data);
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
I think error on this -
callbackmanager.onActivityResult(requestCode,resultCode,data);
your callbackmanager is null,you have initialized it on Fblogin() method and it is for facebook login so its giving exception you can give the condition like -
if(callbackmanager!=null){
callbackmanager.onActivityResult(requestCode,resultCode,data);
}